Date: Wed, 6 Jun 2012 15:46:11 +0200 From: Matthias Apitz <guru@unixarea.de> To: freebsd-questions@freebsd.org Subject: Re: IP -> e-mail Message-ID: <20120606134611.GA2185@tiny> In-Reply-To: <20431.22651.888125.876852@jerusalem.litteratus.org> References: <1338973608.78319.YahooMailNeo@web162906.mail.bf1.yahoo.com> <20120606125125.GA2043@tiny> <20431.22651.888125.876852@jerusalem.litteratus.org>
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El día Wednesday, June 06, 2012 a las 09:17:47AM -0400, Robert Huff escribió:
> > Run this in a cronjob:
> >
> > lynx -dump myip.nl | fgrep 'WAN IP'
> >
> > strore the result in a file and when it changes, trigger a mail;
>
> Or, using only tools in the base system:
>
> ifconfig | head | grep "inet " | awk '{print $2}'
This will not work if your host has some private addr which is NAT'ed by a
router; the real test is ask some remote side "how I do apear to you?"
ofc you could do this as well by SSH'ing to some side and asking with
netstat(1) there (which may be shows another NAT'ed addr too :-))
Trust me, the above lynx is the nearly only robust version.
matthias
--
Matthias Apitz
e <guru@unixarea.de> - w http://www.unixarea.de/
UNIX since V7 on PDP-11, UNIX on mainframe since ESER 1055 (IBM /370)
UNIX on x86 since SVR4.2 UnixWare 2.1.2, FreeBSD since 2.2.5
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